Soft switching inverter dead zone and current limiting separation control circuit

• Main Authors: BAO XUWEN, CHEN SAIHU, JIA RUIXUE, LI ZHONGYOU
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2011
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The utility model discloses a soft switching inverter dead zone and current limiting separation control circuit, which is characterized in that one end of a resistor R04 and one end of a resistor R12 are connected with a 5V power supply; the other end of the resistor R04 is connected with the negative input end of a comparator U2-2 and is also connected with a parallel circuit comprising a resistor R02, a resistor R03 and a capacitor C01 and is grounded; the other end of the resistor R12 is connected with a PWM (Pulse-Width Modulation) controller and is also connected with a parallel circuit comprising a resistor R01, a resistor R13 and a capacitor C8 and is grounded; and the positive input end of the comparator U2-2 is connected with given voltage. The utility model can separately control the dead zone and a current-limiting signal, which is convenient for regulation and is beneficial to prolonging the service life of a power tube and improving the welding performance.